if the problem is only with the profile settings tab, then copy the profile.php and profile folder from the location:
“plugins/buddypress/bp-themes/bp-default/members/single/”
to the following location:
“themes/your-current-theme/members/single/”

Following up on @frenx4u, is your theme a child theme of bp-default, or did you adapt it for BP use with the BuddyPress Template Pack? If the latter, you will probably have to do what frenx4u suggests.

It may be caused by one of the plugins you have installed. remove all the cache. if still does not work then move all the plugins except the buddypress to a backup folder and try bringing back one plugin after another.

@r-a-y, I followed the instructions in [https://codex.buddypress.org/releases/1-5-developer-and-designer-information/#theme] and solved the problem. Tks.

The following are the procedures:

—Member settings pages are blank

BuddyPress 1.5 comes with brand-new templates so you can style your member settings pages. However, if you’re using an older child theme, you will need to copy over these templates to your WP theme. To fix this problem, copy over the folder [/plugins/buddypress/bp-themes/bp-default/members/single/settings/] directly to your WP theme’s folder.